diff --git a/package-lock.json b/package-lock.json
index 2c6ae48..0cab697 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -219,9 +219,9 @@
       }
     },
     "bootstrap": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.1.1.tgz",
-      "integrity": "sha512-SpiDSOcbg4J/PjVSt4ny5eY6j74VbVSjROY4Fb/WIUXBV9cnb5luyR4KnPvNoXuGnBK1T+nJIWqRsvU3yP8Mcg=="
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
+      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag=="
     },
     "brace-expansion": {
       "version": "1.1.11",
@@ -1104,7 +1104,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -1519,7 +1520,8 @@
         "safe-buffer": {
           "version": "5.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -1575,6 +1577,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -1618,12 +1621,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
diff --git a/package.json b/package.json
index 6e7d9ef..54dab45 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "node": ">= 8.2.1"
   },
   "dependencies": {
-    "bootstrap": "^4.0.0-beta",
+    "bootstrap": "^4.3.1",
     "jquery": "^3.3.1",
     "openpgp": "^2.5.11",
     "otplib": "^9.0.0",